5KP15A-TP Transient Voltage Suppressor Equivalent & Substitute Parts

Part Overview

The 5KP15A-TP is an active, through-hole mounted unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Micro Commercial Co. It provides transient overvoltage protection with a 15V reverse standoff voltage and 24.4V maximum clamping voltage at peak pulse current. The part is ROHS3 compliant and rated for general-purpose applications across an operating temperature range of -55°C to 175°C. Equivalent and substitute parts are identified based on matching electrical performance parameters and mechanical compatibility within the TVS diode category.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	15V
Voltage - Breakdown (Min)	16.7V
Voltage - Clamping (Max) @ Ipp	24.4V
Power - Peak Pulse	5000W (5kW)
Mounting Type	Through Hole
Package / Case	R-6, Axial
Operating Temperature	-55°C ~ 175°C (TJ)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 5KP15A-TP is determined by the following critical parameters:

Voltage - Reverse Standoff (Typ): 15V
Voltage - Breakdown (Min): 16.7V minimum
Power - Peak Pulse: 5000W (5kW)
Mounting Type: Through Hole
Unidirectional Channels: 1
Type: Zener
RoHS Status: ROHS3 Compliant

Substitute parts are grouped into two categories based on clamping voltage performance:

Category A - Matched Clamping Voltage (24.4V): Parts with identical clamping voltage specifications, differing only in package designation or manufacturer series designation.

Category B - Higher Clamping Voltage (35V): Parts with elevated clamping voltage that maintain the same reverse standoff and breakdown voltages but provide different transient response characteristics.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Power - Peak Pulse	Package / Case	Current - Peak Pulse	Operating Temperature	RoHS Status
5KP15A-TP	Micro Commercial Co	15V	16.7V	24.4V	5000W	R-6, Axial	-	-55°C ~ 175°C	ROHS3
5KP15A	Littelfuse Inc.	15V	16.7V	24.4V	5000W	P600, Axial	209A	-55°C ~ 175°C	ROHS3
BZW50-15	STMicroelectronics	15V	16.6V	35V	5000W	R-6, Axial	1714A (8/20µs)	-	ROHS3
BZW50-15RL	STMicroelectronics	15V	16.6V	35V	5000W	R-6, Axial	1714A (8/20µs)	-	ROHS3
SLD15U-017-B	Littelfuse Inc.	15V	16.7V	24.4V	5000W	P600, Axial	209A	-55°C ~ 175°C	ROHS3

Engineering Selection Recommendations

All identified substitute parts maintain active product status and ROHS3 compliance, meeting the regulatory requirements of the 5KP15A-TP.

5KP15A (Littelfuse Inc.): Direct electrical equivalent with matched clamping voltage (24.4V) and peak pulse power (5000W). Differs in package designation (P600 vs. R-6) and includes specified peak pulse current (209A). Suitable for direct substitution where P600 package footprint is compatible with circuit board layout.

BZW50-15 and BZW50-15RL (STMicroelectronics): Maintain reverse standoff voltage (15V) and peak pulse power (5000W) but specify higher clamping voltage (35V). Both use R-6 package matching the original part. The RL suffix indicates tape and reel packaging variant. Selection of these parts requires verification that the elevated clamping voltage (35V vs. 24.4V) is acceptable for the protected circuit.

SLD15U-017-B (Littelfuse Inc.): Automotive-grade equivalent with AEC-Q101 qualification. Electrical parameters match the 5KP15A-TP (24.4V clamping, 5000W peak pulse). Differs in package designation (P600) and packaging format (Bulk vs. Cut Tape). Suitable for applications requiring automotive-grade components.

Frequently Asked Questions (FAQ)

Q: Can I substitute 5KP15A-TP with 5KP15A?

A: Yes. Both parts share identical electrical specifications: 15V reverse standoff, 16.7V breakdown voltage, and 24.4V clamping voltage at 5000W peak pulse power. The primary difference is package designation (R-6 vs. P600). Verify that the P600 package footprint is compatible with your circuit board layout before substitution.

Q: What is the difference between BZW50-15 and BZW50-15RL?

A: Both parts are electrically identical. BZW50-15RL indicates tape and reel packaging format, while BZW50-15 is supplied in cut tape. The RL suffix denotes the packaging variant only; electrical performance and R-6 package specifications are identical.

Q: Can I use BZW50-15 instead of 5KP15A-TP?

A: Electrical substitution is possible based on matching reverse standoff voltage (15V) and peak pulse power (5000W). However, the clamping voltage differs: BZW50-15 specifies 35V maximum versus 24.4V for the 5KP15A-TP. This higher clamping voltage may affect transient response characteristics. Verify that the elevated clamping voltage is acceptable for your circuit protection requirements before substitution.

Q: Is SLD15U-017-B suitable for automotive applications?

A: Yes. SLD15U-017-B carries AEC-Q101 automotive qualification and is designated as automotive-grade. It matches the electrical specifications of 5KP15A-TP (24.4V clamping, 5000W peak pulse) and is suitable for automotive circuit protection applications.

Q: What are the package compatibility considerations?

A: The 5KP15A-TP uses R-6 axial package. Substitute parts use either R-6 (BZW50-15, BZW50-15RL) or P600 (5KP15A, SLD15U-017-B) packages. Both are through-hole axial packages but have different physical dimensions. Verify footprint compatibility with your circuit board layout before substitution.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All identified substitute parts maintain ROHS3 compliance, matching the regulatory status of the 5KP15A-TP.

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